Hi Vishwajeet,

Just like what Sam mentioned above, the Architect from ServiceNow who is working with us also mentioned that there is no OOB functionality that would run the IP discovery for newly created VM at the moment.

In our case, we have few VM schedules in place which runs daily and those will usually discover  and create Windows servers records for the newly created VMS in vcenter virtual machine instance class.

Our ServiceNow Architect suggested to have a Flow in place if needed. hope this answered your query.